J Korean Knee Soc.  2004 Dec;16(2):131-137.

Cementless Total Knee Arthroplasty with Posterior Cruciate Retention in Rheumatoid Arthritis

• Choi YR
• Han CD
• Yang IH

Abstract

PURPOSE: The result of cementless total knee arthroplasty with posterior cruciate ligament retention in rheumatoid arthritis patients was evaluated.
MATERIALS AND METHODS
Thirty patients (fifty knees) followed up after cementless total knee arthroplasty with posterior cruciate ligament retention was evaluated clinically and radiologically. Average follow up was 9.2 years(5.1~14.3).
RESULTS
The mean HSS knee score improved from 47.4 preoperatively to 81.8 postoperatively, and the mean range of motion of 89.7 degrees preoperatively to 101.2 degrees postoperatively. The mean tibiofemoral angle was 4.9 degrees valgus. Posterior instability was observed in 1 case(2%) at the most recent follow up. Radiolucent line was observed in 41 cases(82%), and osteolysis was observed around tibial component in 13 cases(26%), and around femoral component in 4 cases(8%). Eight cases(16%) of revision was due to 1 case of aseptic loosening and osteolysis each, and the other due to polyethylene wear of patellar or tibial component.
CONCLUSION
Although there are osteopenia in rheumatoid arthritis compared to osteoarthritis, cementless total knee replacement with posterior cruciate retention showed stable fixation. However, the new method for initial fixation of tibial component is needed because osteolysis around tibial component tended to start around cancellous screws.

Keyword

Rheumatoid arthritis; Cementless total knee replacement; Posterior cruciate ligament retention

MeSH Terms

Arthritis, Rheumatoid*
Arthroplasty*
Arthroplasty, Replacement, Knee
Bone Diseases, Metabolic
Follow-Up Studies
Humans
Knee*
Osteoarthritis
Osteolysis
Polyethylene
Posterior Cruciate Ligament
Range of Motion, Articular
Polyethylene